clock

have a clock I want to display in a TextView. I would have thought there was a few nice functions to do this, but I couldn't find anything. I ended up implementing my own way that uses a Handler. What I'm asking though, is there a better (more efficient) way to display a real time updating clock? private Runnable mUpdateClockTask = new Runnable() { public void run() { setTime(); mClockHandler.postDelayed(this, 1000); } }; That's my handler, which runs every second, and then my set time and date function is below TextView mClockView; public void setTime() { Calendar cal = Calendar.getInstance()

Using the following code: #include<stdio.h> #include<time.h> int main() { clock_t start, stop; int i; start = clock(); for(i=0; i<2000;i++) { printf("%d", (i*1)+(1^4)); } printf("\n\n"); stop = clock(); //(double)(stop - start) / CLOCKS_PER_SEC printf("%6.3f", start); printf("\n\n%6.3f", stop); return 0; } I get the following output:

I had to write a very simple console program for university that had to measure the time required to make an input. Therefor I used clock() in front and after an fgets() call. When running on my Windows computer it worked perfectly. However when running on my friends Mac-Book and Linux-PC it gave extremely small results (a few micro seconds of time only). I tried the following code on all 3 OS: #include <stdio.h> #include <time.h> #include <unistd.h> void main() { clock_t t; printf("Sleeping for a bit\n"); t = clock(); // Alternatively some fgets(...) usleep(999999); t = clock() - t; printf(

I used this code for adding a clock to my app: <DigitalClock android:id="@+id/digitalclock" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:textSize = "30sp" /> The problem is that it shows also seconds..there is a simple and fast way for hide those? I need just hours and minutes in hh:mm format instead of hh:mm:ss! any suggestions? Thanks! IanTeda Found the answer here , for anyone else looking for a working answer, here it is: Clone/copy DigitalClock.java from android source Change format strings within new

I know that 10 years ago, typical clock precision equaled a system-tick, which was in the range of 10-30ms. Over the past years, precision was increased in multiple steps. Nowadays, there are ways to measure time intervals in actual nanoseconds. However, usual frameworks still return time with a precision of only around 15ms. My question is, which steps did increase the precision, how is it possible to measure in nanoseconds, and why are we still often getting less-than-microsecond precision (for instance in .NET). (Disclaimer: It strikes me as odd that this was not asked before, so I guess I

C++11 defines high_resolution_clock and it has the member types period and rep . But I can not figure out how I can get the precision of that clock. Or, if I may not get to the precision, can I somehow at least get a count in nanoseconds of the minimum representable time duration between ticks? probably using period ? #include <iostream> #include <chrono> void printPrec() { std::chrono::high_resolution_clock::rep x = 1; // this is not the correct way to initialize 'period': //high_resolution_clock::period y = 1; std::cout << "The smallest period is " << /* what to do with 'x' or 'y' here? */ <